Thread: About gmapdem.img file Express updated in Nuvi with 2015.10 EU release.

My experience quoted was with the EU DEM in Map folder on microSD named D2249750A.IMG and of course it works [and will work even if named Mickey_Mouse.img for that matter] being as it's in the Map folder. As I said, it was selectable/de-selectable individually in the MyMaps menu and the overriding DEM disabling in Map Layers. 'Map Layers' is the same whether reached via Settings>Map & Vehicle>Map Layers or by pressing the 'layers' symbol on the secondary map page.

It looks like the same is similar if the D2249750A.IMG is on the devicve in the .sys folder, except it does not show up in the my maps. Just means less clutter on the device I suppose. It just baffles me why the terrain mapping needs to be accessible form three dirrefernt locations; my maps,map layers and the map layer shortcut itself on the actual map.

I dont have the file D2249750A.IMG on the sd card, but I not bothered as it all works. It would be nice if Garmin uk tech support learned and understood how their own products work. These guys really dont have a clue. Garmin in America were aware and sorted it, according to some other forums where this issu was discussed.

I will play with this file when I return from my trip.